If your having trouble with Windows 10 and you want to try repairing it before formatting and reinstalling Windows 10, then following these step can help fix or repair your windows operating system even if its not booting up or your getting BSOD.
* How can I fix Windows 10 problems?
* How do you repair Windows 10?
* How to Repair Corrupted Windows System Files?
* Windows 10 Won't Boot?
* Repair your Windows 10 installation?
* Windows Automatic Repair Loop?